Here is the full list of all 20 Late Shift achievements. It takes around 4-5 hours to unlock all of the achievements on Windows.
Watch all seven endings
Go home alone
Go to the Tchois
Don't cross the line
Reject the offer
Don't give in
Take the high road
Convince Parr it's a fake
Watch four endings
Fall for the bluff
Find all main chapters
Accept the offer
Enter the wrong code
Defeat the odds
Pull the trigger
The key to friendship
Don't fight
More than just friends?
Split the share 50/50
What are the chances?